JSFiddle - React, Tailwind, and code Playground

by xingping wang

HTML

<div class="opacity">
     background:#f00;
  opacity:0.5;
  </div>
<div class="rgba">
  rgba(255,0,0,0.5)
</div>

CSS

.opacity,.rgba{
  width:200px;
  height:100px;
  text-align:center;
  margin:30px;
}
.opacity{
  background:#f00;
  opacity:0.5;
}
.rgba{
  background:rgba(255,0,0,0.5)
}